/Engine/Source/Editor/UnrealEd/Classes/Editor/EditorEngine.h
Checks the validity of parenting one actor to another
true if the parenting action is valid and will succeed, false if invalid.
bool CanParentActors ( const [AActor](API\Runtime\Engine\GameFramework\AActor) * ParentActor, const [AActor](API\Runtime\Engine\GameFramework\AActor) * ChildActor, [FText](API\Runtime\Core\Internationalization\FText) * ReasonText )